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发明名称
Power hammers
摘要
申请公布号
US2772858(A)
申请公布日期
1956.12.04
申请号
US19550503407
申请日期
1955.04.25
申请人
JOSEPH C. NOVACK
发明人
GALVEZ FRANCISCO
分类号
B25D11/12;E02D7/06
主分类号
B25D11/12
代理机构
代理人
主权项
地址
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